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.NET Framework 3.5 Offline installer for Windows 10

Holton, Emily K (US) 20 Reputation points
2025-12-05T16:02:52.0366667+00:00

How can I installl .NET Framework offline? xxxxxxxxxxxxxxxxxxxto get the requred 50 chars, this is rediculousxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Windows for home | Windows 10 | Apps
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  1. Q&A Assist
    2025-12-05T16:03:06.4366667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    To install .NET Framework 3.5 offline on Windows 10, you need to use the original installation media's cab files. Here are the steps to do this:

    1. Obtain the Windows 10 installation media: You can create a bootable USB drive or download the ISO file from Microsoft.
    2. Mount the ISO or insert the USB drive: If you have an ISO file, right-click it and select "Mount" to access its contents.
    3. Open Command Prompt as Administrator: Search for "cmd" in the Start menu, right-click on Command Prompt, and select "Run as administrator".
    4. Run the DISM command: Use the following command to install .NET Framework 3.5: 
         DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:D:\sources:sxs /LimitAccess
      Replace D: with the drive letter of your mounted ISO or USB drive.

    This will install .NET Framework 3.5 offline without needing an internet connection.

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  1. Kapil Arya 36,466 Reputation points Volunteer Moderator
    2025-12-05T16:35:58.4333333+00:00

    Hello,  

    Please try these steps:

    Create a temporary folder under system root drive directory for example C:\Temp.

    Download Windows 10 ISO and mount it.

    Then go to mounted drive, open Sources and copy sxs folder.

    Paste sxs folder to C:\Temp.

    Execute this command in admin PowerShell:

    dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:c:\temp\sxs /LimitAccess

    For detailed steps, refer this guide:

    https://www.kapilarya.com/how-to-enable-net-framework-3-5-on-windows-10

    Let us know if this helps! 

    Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

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